Also especially before a vowel, py-.

Origin of pyo-

< Greek, combining form of pýon; akin to Latin pūs pus Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for pyo-


before a vowel py-

combining form
  1. denoting puspyosis

Word Origin for pyo-

from Greek puon
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for pyo-

word-forming element meaning "pus," from comb. form of Greek puon "pus" (see pus).

Online Etymology Dictionary, © 2010 Douglas Harper

pyo- in Medicine


  1. Pus:pyoderma.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.